Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Langchuan, China, as it plays a vital role in promoting skin health and preventing sunburn. With the region's Cfa climate, characterized by warm summers, the intensity of UV radiation can reach hazardous levels, particularly between 10 AM and 2 PM. The daily UV Index peaks at a formidable 12, indicating a high risk of harm from unprotected sun exposure. By being aware of the UV levels, you can take the necessary precautions to enjoy the sun safely and protect your skin from long-term damage.
At dawn, the UV Index starts gently at 2 by 7:00 AM, gradually building momentum as the sun rises. By 8:00 AM, it ticks up to 4, reaching a noteworthy 6 by 9:00 AM. The day's intensity peaks with a striking 12 at noon, emphasizing the importance of sun protection during these peak hours. As the afternoon unfolds, 11 at 1:00 PM and 11 again at 2:00 PM signal sustained exposure risks. The UV intensity begins to decline after 2:00 PM, dipping to 8 at 3:00 PM, then to 6 at 4:00 PM. By evening, the index fizzles out to 1 at 5:00 PM and remains there until 7:00 PM, before finally waning to 0 as the sun sets. Enjoy the sunshine, but remember to stay protected during those peak hours!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 2 | low | 45 min |
08:00 | 4 | moderate | 30 min |
09:00 | 6 | high | 25 min |
10:00 | 9 | very high | 15 min |
11:00 | 11 | extreme | 10 min |
12:00 | 12 | extreme | 10 min |
13:00 | 11 | extreme | 10 min |
14:00 | 8 | very high | 15 min |
15:00 | 6 | high | 25 min |
16:00 | 3 | moderate | 30 min |
17:00 | 1 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 0 | low | 45 min |
Throughout the year, the UV Index varies significantly, indicating seasonal changes in sun exposure risk. The high-risk months are from March to September when the UV Index reaches very high to extreme levels—peaking at 12 in May through August, with a burn time of just 10 minutes. Visitors and residents should particularly exercise caution during these months by seeking shade, wearing protective clothing, and applying sunscreen regularly. As winter approaches, the UV Index decreases, with January and February remaining high but allowing for longer burn times of 25 minutes. In contrast, October marks a return to very high, urging continued sun safety practices. Overall, understanding these UV trends is essential for protecting skin health year-round.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Beijing UVI | 2 | 3 | 5 | 8 | 9 | 9 | 10 | 9 | 7 | 6 | 4 | 2 |
Chengdu UVI | 5 | 6 | 8 | 10 | 12 | 11 | 11 | 10 | 11 | 8 | 6 | 4 |
Shanghai UVI | 5 | 6 | 8 | 10 | 10 | 11 | 12 | 11 | 11 | 8 | 6 | 4 |
Langchuan | 6 | 7 | 9 | 10 | 12 | 12 | 12 | 12 | 11 | 9 | 6 | 5 |
Guangzhou UVI | 7 | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 11 | 10 | 9 | 7 |
Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |